保护性耕作对黄土高原塬区作物轮作系统磷动态的影响

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郑丽娜,王先之,沈禹颖

Dynamic of phosphorus with wheat-soybean rotation systems under conservation tillage in the western Loess Plateau

ZHENG Li-na, WANG Xian-zhi, SHEN Yu-ying

草业学报 . 2011, (4): 19 -26 .